UBR-box found in Arabidopsis thaliana auxin transport protein BIG and similar proteins
BIG (also called protein attenuated shade avoidance 1, protein corymbosa1, protein dark over-expression of cab 1, protein low phosphate-resistant root 1, protein transport inhibitor response 3, or protein umbrella 1) is a calossin-like protein required for auxin efflux and polar auxin transport (PAT) influencing auxin-mediated developmental responses in Arabidopsis.
Jiyao W et al.(2023). "The conserved domain database in 2023.",